/Engine/Source/Runtime/GeometryCore/Public/DynamicMeshEditor.h
Append normals from one attribute overlay to another. Assumes that AppendMesh has already been appended to Mesh. Note that this function has no dependency on .Mesh, it could be static
void AppendNormals ( const [FDynamicMesh3](API\Runtime\GeometryCore\DynamicMesh\FDynamicMesh3) * AppendMesh, const [FDynamicMeshNormalOverlay](API\Runtime\GeometryCore\DynamicMesh\FDynamicMeshNormalOverlay) * FromNormals, [FDynamicMeshNormalOverlay](API\Runtime\GeometryCore\DynamicMesh\FDynamicMeshNormalOverlay) * ToNormals, const [FIndexMapi](API\Runtime\GeometryCore\FIndexMapi) & VertexMap, const [FIndexMapi](API\Runtime\GeometryCore\FIndexMapi) & TriangleMap, [TFunction](API\Runtime\Core\GenericPlatform\TFunction)< FVector3d(int, const FVector3d &)> NormalTransform, [FIndexMapi](API\Runtime\GeometryCore\FIndexMapi) & NormalMapOut )